In marine environments,
A) both species richness and productivity increase with latitude.
B) species richness increases and productivity decreases with latitude.
C) species richness decreases and productivity increases with latitude.
D) both species richness and productivity decrease with latitude.
C
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Which maternal serum marker pattern indicates increased risk of Down syndrome in a fetus?
A) Deficient hCG and inhibin A and elevated AFP, estradiol, and pregnancy-associated plasma protein A Progesterone and testosterone B) Elevated hCG, inhibin A, AFP, estradiol, and pregnancy-associated plasma protein C) Deficient hCG, inhibin A, AFP, estradiol, and pregnancy-associated plasma protein D) Elevated hCG and inhibin A and deficient AFP, estradiol, and pregnancy-associated plasma protein A
As structural diversity within plant communities increases, the number of animal species ________
Fill in the blank(s) with correct word
Malaria is caused by Plasmodium falciparum, a non-motile protist that contains a cluster of microtubules at one end of the cell. Once injected into the bloodstream, these microtubules are used to attach to red blood cells. In areas of the world where malaria is endemic, people have a relatively high incidence of the allele for
A. sickle cell. B. blue eyes. C. cystic fibrosis. D. mental retardation. E. hemophilia.
What do geneticists use along with historical records to track traits through many generations of a family?
A. Epidemiology B. Punnett square C. DNA polymorphisms D. Mitochondrial analysis E. Pedigree